Compress data, gain performance
Posted Feb 2, 2007 16:29 UTC (Fri) by walles
Parent article: Embedded Linux: Using Compressed File Systems
It's obvious that compressing and decompressing data takes more CPU time than not doing it.
But since reading blocks from disk is *really* expensive, why wouldn't it be possible to actually *gain* performance from compressing data on disk? Assuming that fewer blocks would have to be read from disk this way?
Does anybody know about any numbers for how much it actually costs or how much it's possible to gain performance wise by compressing data on disk?
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